Improvement in steam-boiler attachments



3 Sheets-Sheet 1. F. W. KREMER. 'Steam-Bo'iler Attachment. No. 218,542.Patented Aug. 12,1879.

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' 3 Sheets-Sheet 2. P. W. KREMER.

Steam-Boiler Attachment. No. 218,542. Patented Aug. 12,1879.

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UNITED STATES PATENT OFFICE.

FRANK W. KREMER, OF AKRON, OHIO, ASSIGNOR TO J. F. FAHS AND A. O.BELDEN, OF SAME PLACE, ONETHIRD TO EACH.

IMPROVEMENT IN STEAM-BOILER ATTACHMENTS.

Specification forming part of Letters Patent No. 218,542, dated August12, 1879; application filed July 22, 1879.

To all whom it may concern:

Be it known that I, FRANK W. KREMER, of Akron, in the county of Summit,in the State of Ohio, have invented certain new and useful Improvementsin Steam-Boiler Attachments, of which the following is a full, clear,and exact description.

My invention relates primarily to an attachment for steam-boilers forthe increased generation of steam at short notice, it being applicablefor continuous use in steam-generation.

The invention consists in the instantaneous production of steam byforcing the hot water of the boiler through spray-tubes onto heatedsurfaces by means of a force-pump.

In the drawings illustrating my invention, Figure 1 is a centralvertical section of an upright steam-boiler having my invention applied.Fig. 2 is a top-plan view. Fig. 3 is a cross-section taken on ahorizontal plane, a." w, of Fig. 1, just below the steam-dome Fig. 4., aperspective, and Fig. 5 a partial sectional view, of one form ofspray-tube Fig. 6, a top plan, and Fig. 6 a perspective view, of anotherform of spray-tube. Fig. 7 is a side elevation of my apparatus asadapted for stationary horizontal or locomotive engines; Fig. 8, an endview, and Fig. 9 a longitudinal section, of the generating-retort asemployed in horizontal boilers or engines.

The letter A designates an upright boiler of any approved construction.Preferably the boiler has an enlarged central fire-flue,'B, eX- tendingfrom the furnace 0 through the steamdome D. The usual smoke-chamber E,leading to the smoke -staok, may surround the steam-dome, the fluesleading into said chamber. The boiler proper and dome are connected bysteam-pipes a a.

F is a pump, placed within the water-jacket of the boiler-furnace. Thispump is a forcepump, and takes the water from the boiler and forces itup a pipe, (I, through a circular pipe, 6, and thence throughspray-pipes f onto the heated fire-fines, upon coming into contact withwhich it is instantly converted into steam.

The-pump may have its piston-rod 12 extended up through the boiler andoperated by a handlever, c. It may also be operated by a steamdrivenmechanism.

The circular pipe 6 may encircle the flues, and its spray pipes or tubesradiate inwardly from it in such manner as to permit the escape of thewater against the lines.

The spray-tubes are susceptible of various constructions, some of whichare illustrated. In Figs. 4 and 5 the tubes are straight pieces of pipewith open or partially closed ends, having a cup, h, attached theretofor spreading the water in a film, and in which an openin g or openings,t, is made to divide the water into spray. In Figs. 6 and 6 the tubeshave small orifices in them, and their ends f are flattened for the samepurpose.

In applying my apparatus to boilers already built it may be necessary toattach the pump and the pipe d outside, as illustrated by the dottedlines in Fig. 1; but the best arrangement is to place the pump withinthe waterjacket of the furnace, where it is kept hot, and,

the water used for spraying is prevented from cooling in forcin git t0the spray-tubes, whereby steam is more readily generated.

It will be noticed that in my invention hot water is thrown forciblyagainst hot surfaces in a finely-divided state, and thereby is certainlyand instantaneously converted into steam. All the steam generated isconducted into the steam-dome D, and by having the fire-flue B of largediameter a large heatingsurface is introduced into the steam-dome, andits contained steam thereby superheated.

The circular pipe 6 is provided with a blowoff, g, whereby it may becleansed of sediment, and its spray-tubes thereby kept free to makespray effectively.

This apparatus may be kept in constantuse in making steam, or may beonly occasionally used, when an excess of steam is required foremergency.

To apply my invention to horizontal boilers, whether stationary orlocomotive, a modifica tion of the construction is necessary. I haveshown such modification in Figs. 7,8, and 9.

The letter Z represents a boiler having the usual steam-dome m andfurnace n. Within the furnace are arranged so as to be in direct contactwith the fire two (more or less) retorts, 0, of strong metal, cast,preferably, but of other construction, if desired. I have shown two suchretorts. They are connected at their inner ends by a pipe, p, whichleads to the steamdome, and has a cook or valve, 1', inserted at itsjuncture with the dome. .xis a pipe connecting the two retorts at theirlower front ends, and having a branch pipe, 2, uniting it with the lowerportion of the boiler, at which point it (the said branch pipe) isprovided with a cock or valve, u. The pipe s is also provided with aterminal cock, r. The retorts are provided with longitudinal spray pipesor tubes e, having a number of orifices in them, and these pipes areunited to a pipe, 10, which is provided with a cock or valve, y, and isconnected to a force-pump, F. This pump is suitably located withreference to the boiler, may take its water from the boiler or heater,and is hand or steam driven, as indicated.

In the operation of this form of apparatus, water is turned from theboiler, by cock u, into the retorts until such retorts are heated. Thewater is then shut 0d and escapes, through the pipe 8, out at cock 1*.The pump is then set in motion and water forced through pipe in and thespray-tubes c, whence, coming into contact with the hot surface of theretorts in a finelydivided state, it is, as before, instantaneouslyconverted into steam. The steam escapes through the pipe p and cock rinto the steam' dome. The cook or valve r should, of course, be of suchconstruction as to prevent the escape of steam from the dome.

The cock 3 is used to prevent back-flow of water from the retorts in thefirst heating, this filling of the retorts for the first heating withwater being to prevent the burning out of the said retorts.

What I claim is A boiler provided with an auxiliary steamgeneratingmechanism composed of a forcepump adapted to be attached to, but formingno integral part of, an ordinary boiler, and takipg the hot water fromthe boiler, a spraytube through which the pump forces the water, andheated metallic surfaces against which the water is sprayed, and therebyinstantly converted into steam, substantially as shown and described.

To the above specification of my invention I have signed my name this21st day of December, A. l). 1878.

FRANK W. KREMER.

Witnesses:

JOSEPH F. FAHS, NAPOLEON C. BARTON.

